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Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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A 36 in. blast valve was positioned in a duct, branching from an 8 ft diameter shock tube, and subjected to blast in both the open and closed position.
Topics: DTIC Archive, Peterson, R L, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *AIR...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Two methods have been developed to investigate the sensitivity of numerical solutions of sets of coupled nonlinear differential equations to uncertainties in the modeling parameters entering the calculations of chemical kinetics. The methods determine the sensitivity by performing the calculations for a set of values of the modeling parameters within the estimated uncertainty range of each. The methods are demonstrated for two chemical reaction systems: The N-O system, and the H-O system.
Topics: DTIC Archive, Schaibly, John H, SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA, *REACTION KINETICS,...
Defense Technical Information Archive
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An investigation was made of the feasibility of CAI for Navy technical training. The computer system used was the IBM 1500 system. The curriculum was taken from Basic Electricity/Electronics School. Five CAI modules were developed which could replace 92 hours of the class curriculum. CAI provided very effective and efficient instruction. CAI students scored higher than class-instructed students on School Examinations as well as Supplemental tests, and required about 45% less training time....
Topics: DTIC Archive, Ford, Jr , John D, NAVAL PERSONNEL AND TRAINING RESEARCH LAB SAN DIEGO CA, *NAVAL...
The report contains some new measurements on the thermal stability of As2Se3-As2Te3 glasses in which multiple crystallization processes have been found by differential scanning calorimetry. Discussion is given of the structure of As2Se3 films by comparing intensity and rdf curves obtained experimentally with theoretical curves derived from a microcrystallite model. The data strongly indicates that a glassy network model is more in accord with the experimental rdf than a microcrystalline model....
Topics: DTIC Archive, Dove, Derek B, FLORIDA UNIV GAINESVILLE ENGINEERING AND INDUSTRIAL EXPERIMENT...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Due to both optical distortion and water turbidity, divers are usually inaccurate when they estimate distances under water. Previous studies have demonstrated that training with feedback improves judgment accuracy. The present study showed that the effect of training diminishes considerably during the nine weeks following training. A more extensive training program is recommended for diving tasks in which distance estimation is important.
Topics: DTIC Archive, Ferris, Steven H, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *DIVING, *NAVAL...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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A high pressure system equipped with several small sample vessels has been installed in our laboratory and successfully modified for conducting a variety of biological reactions. Various problems encountered in making modifications to the system and their solutions are described. The most successful experiments to date have utilized erythrocytes and liver preparations for the study of glycolysis under various atmospheres and pressures. The principal advantages of the system as it is being...
Topics: DTIC Archive, Smith, Alexander H, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *HIGH PRESSURE,...
Blood from twelve volunteers serving on a submarine and breathing elevated levels of CO2 was analyzed for electrolyte, pH, and pCO2 levels in the plasma and in red-cell hemolysates. The method for measuring pH and pCO2 in frozen samples entails certain difficulties due to loss of CO2 during storage. Empirically determined correction factors were used for pH and pCO2. After seven days of exposure to the submarine atmosphere (0.9% CO2) red cell pH was statistically significantly lower, than...
Topics: DTIC Archive, Gortner, David A, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *ACID BASE...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Since the errors made in estimating distance under water are dependent on the degree of water turbidity, improvement through training in one body of water will not transfer to another body of water if there is a large difference in turbidity. This experiment demonstrated that the transfer problem can be overcome by training divers under different turbidity conditions so that they learn to tailor their corrections to the prevailing conditions. This training procedure would be useful for all...
Topics: DTIC Archive, Ferris, Steven H, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *VISUAL PERCEPTION,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The objective of the research is to determine whether or not the basic neural phenomenon of 'masking' (the ability of a visual stimulus to inhibit the detection of another, target stimulus) can be used as an indicator of the state of fatigue or stress of an individual's nervous system. Fatiguing the visual system by prolonged viewing of a moving pattern results in the reduction of the apparent brightness of a moving line. The ability of the line to 'mask' a target stimulus is also reduced, by...
Topics: DTIC Archive, Luria, Saul M, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *FATIGUE(PHYSIOLOGY),...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Navy personnel with normal hearing and with hearing losses at 3 kHz and above were evaluated on tests of speech discrimination in noise. Two tests were used, one previously designed for use in audiological clinics and one constructed at this laboratory with background noise similar to that found in the enginerooms of nuclear submarines. The results indicate that subjects with hearing losses at 3 kHz and above may score as much as 11 per cent more generally at least five per cent below normals...
Topics: DTIC Archive, Murry, Thomas, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *NOISE, *AUDITORY...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Guinea pigs were found to have a much higher susceptibility to carbon dioxide than rats. During exposure to CO2 concentrations ranging from 1-50% CO2, marked species differences were observed in mortality, growth curves, organ/body weight ratios and serum enzyme responses. The difference in tolerance to CO2 between guinea pigs and rats has been related to their differing buffer capacity. Guinea pigs showed higher levels of hydrogen ion concentrations for every exposure. No evidence of tissue...
Topics: DTIC Archive, Schaefer, K E, NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT, *TOXICITY, *CARBON...
The objective of this study was to select and characterize the most efficient discontinuous fiberglass-epoxy resin composite for ultimate use in ballistically tolerant flight control components. Selection of composite constituents, ballistic damage and crack propagation study, and design allowable properties evaluation study are reported. The effects of various constituent parameters on the extent of damage and residual tensile load capacity were determined on standard specimens after tumbled...
Topics: DTIC Archive, Cully, Donald C, GOODYEAR AEROSPACE CORP AKRON OH, *AERODYNAMIC CONTROL SURFACES,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Measurements were made of the unsteady normal force and pitching moment on an NACA 0012 airfoil model oscillated both sinusoidally and nonsinusoidally over a range of incidence angles, including a substantial penetration into stall. The sinusoidal normal force and pitching moment data were reduced and tabulated as functions of the angle of attack, the angular velocity parameter, and the angular acceleration parameter. This generalized form of the data was used to reconstruct the measured...
Topics: DTIC Archive, Carta, Franklin O, UNITED AIRCRAFT RESEARCH LABS EAST HARTFORD CT, *HELICOPTER...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The report covers a study of the corrosion resistance provided by specification finishing systems to aluminum and magnesium exposed in a tropical environment. The systems include chemical, anodic, and wash primer metal pretreatments; primers specified for these metals in Military Standard No. 171 'Finishing of Metal and Wood Surfaces'; several other specification primers that have been used for these metals; and an experimental epoxy primer. Finish coats included specification lustreless,...
Topics: DTIC Archive, Sandler, Melvin H, COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD, *CORROSION...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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TIONTwenty enlisted men, equipped with two types of body armor fired the M16 at pop-up targets. The range was electronically instrumented to record shots and hits, as well as relationships between these events. Each subject fired 180 rounds at targets which appeared for two, four and six-second presentation intervals. The results showed no significant difference between standard nylon vest, nylon titanium vest or no-vest conditions as subjects fired from the standing position. Further, it was...
Topics: DTIC Archive, Corona, Bernard M, HUMAN ENGINEERING LAB ABERDEEN PROVING GROUND MD, *ARMY PERSONNEL,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Intensity interferometry, as developed by Hanbury Brown and Twiss for stellar observation, has shown relative insensitivity to atmospheric scintillation. However, with classical sources, the limitations placed on this technique by quantum noise and detector efficiency are somewhat severe. This situation is vastly improved when laser illumination is employed. Generalizing a methodology of Marchand and Wolf, the far-zone behavior of the mutual intensity function is derived for an intermediate...
Topics: DTIC Archive, Deitz, Paul H, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *LIGHT...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The radar backscatter from undisturbed snow surfaces was measured at 10 GHz, 35 GHz and 95 GHz and at grazing angles of 1 to 0.4 degrees. For horizontally polarized radiation the ground clutter per unit area (m squared) at 10 GHz from a flat snow terrain decreased from -50 db at 1 degree to -70 db at 0.4 degrees. The return was approximately 10 db lower for vertically polarized radiation. The ground clutter depended on the free water content of the snow. The radar cross section of ice blocks...
Topics: DTIC Archive, Hoekstra, Pieter, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *ICE, *RADAR...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The transmission infrared and the laser excited Roman spectra of polycrystalline RDX have been measured in the range of 40 to 4000/cm. To aid assignments in the spectral region of 400 to 4000/cm, the spectra of two types of N15 - labeled samples and the solution spectra in different solvents were also recorded. From these data it was possible to assign many of the observed bands to intramolecular modes of the RDX molecule. The Raman active lattice modes also were resolved and found to be...
Topics: DTIC Archive, Iqbal, Zafar, PICATINNY ARSENAL DOVER NJ, *RAMAN SPECTROSCOPY, *INFRARED SPECTRA,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The purpose of this study was to develop the necessary design information for the development of a portable, gasoline-fired, radiant heater to keep personnel and equipment warm in the Arctic environment. The heater is required to adequately heat a space 8 feet in diameter located from 4 to 10 feet from the heater, at an ambient temperature in the range of 0 to -50F and winds up to 20 mph. Focusing of the radiation emanating from the heater is considered essential to maintain high heating rates...
Topics: DTIC Archive, Guzdar, Adi R, FOSTER-MILLER INC WALTHAM MA, *HEATERS, ARCTIC REGIONS, GASOLINE,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The report contains a description of airborne checkout sensors, their installation points, and their checkout parameters. Included is a computer aided analysis of the checkout procedures and results obtained.
Topics: DTIC Archive, Provenzano, James, UNITED TECHNOLOGIES CORP WINDSOR LOCKS CT HAMILTON STANDARD DIV,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The UH-1H helicopter Test Bed Program was accomplished at the US Army Aeronautical Depot Maintenance Center, Corpus Christi, Texas, during the period 4 October 1970 through 17 December 1971. The program objective was to determine the feasibility of state-of-the-art hardware to automatically accomplish inspection, diagnostic and prognostic maintenance functions on selected subsystems of the UH-1H helicopter. The Hamilton Standard hardware for the program is identified as Airborne Integrated...
Topics: DTIC Archive, Provenzana, James, UNITED TECHNOLOGIES CORP WINDSOR LOCKS CT HAMILTON STANDARD DIV,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The UH-1H helicopter test bed program was accomplished at the US Army Aeronautical Depot Maintenance Center (ARADMAC), Corpus Christi, Texas, during the period 4 October 1970 through 17 December 1971. The program objective was to determine the capability of state-of-the-art hardware to automatically accomplish inspection, diagnostic and prognostic maintenance functions on selected subsystems of the UH-1H helicopter. Northrop's hardware for the program is identified as a Maintenance Reporting...
Topics: DTIC Archive, Butcher, Robert R, NORTHROP CORP PALOS VERDES PENINSULA CA ELECTRONICS DIV,...
The objective of this study is to determine the most cost effective approach to the Army requirement for an Automatic Inspection Diagnostic and Prognostic System (AIDAPS). The system must automatically diagnose mechanical malfunctions, warn of impending mechanical failures, and eliminate unnecessary inspections or part removals. It must also permit the change of aircraft components on an on-condition basis instead of a time change basis. The ultimate goals of the program are to reduce aircraft...
Topics: DTIC Archive, NORTHROP CORP PALOS VERDES PENINSULA CA ELECTRONICS DIV, *DATA PROCESSING,...
One of the most promising materials for superconducting solenoids is the intermetallic compound V3Ga. The report presents a phase equilibrium diagram of the vanadium-gallium system, the diagram being more detailed in the range of concentrations where the compound V3Ga exists. The phase equilibrium diagram was constructed by means of differential-thermal, quenching-X-ray- structural and quenching-microstructural analysis. Eight phases were observed.
Topics: DTIC Archive, Pan, V M, NAVAL RESEARCH LAB WASHINGTON DC, *SUPERCONDUCTORS, *PHASE STUDIES,...
Absorption bands of IR spectra of Al2O, Ga2O, In2O, Tl2O, and B2O were assigned and frequencies of fundamental vibrations were determined. Distances between the metal and oxygen in Al2O and B2O were estimated.
Topics: DTIC Archive, Maltsev, A A, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *OXIDES, *INFRARED...
To monitor the interaction between aircraft motion and pilot control inputs during such unusual happenings as upsets caused by turbulence and collision-avoidance type of maneuvers, Unusual Events Recording Systems (UERS) were installed in three jet transports--a Boeing 707, 727, and 737--operated by two major airlines in scheduled passenger-carrying flights. A total of 2088 hours of usable data recorded between September 1969 and April 1971 were presented in Interim Report FAA-RD-71-69. Then...
Topics: DTIC Archive, Clay, Larry E, TECHNOLOGY INC DAYTON OH INSTRUMENTS AND CONTROLS DIV, *COMMERCIAL...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The review is a comparison of different test data on liquid dielectric breakdown. It supports the assertion that only in certain particular cases is the liquid breakdown mechanism similar to the mechanism of gas. This mechanism is largely determined by the physical and chemical nature of the substance and by certain external factors, such as the form and material of the electrodes, the form of the applied voltage, and a few others. From this it follows that no unitary mechanism for the...
Topics: DTIC Archive, Balygin, I E, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *DIELECTRICS, USSR,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The main objective of the program is the investigation of pulsed electrical CO lasers to determine their potential scaling to large scale, high power operation. The following areas of investigation are included in the current contract: Investigation of the electron beam current requirements and the E/p range for sustainer discharge excitation of CO and CO/N2 mixtures; Design and construction of the electron gun and laser cavity for operation at gas temperatures from 100K to 300K; Experimental...
Topics: DTIC Archive, Center, Robert E, AVCO EVERETT RESEARCH LAB INC EVERETT MA, *GAS LASERS, *INFRARED...
Defense Technical Information Archive
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The effect of the rate of application of load on the triaxial compressive and flexural strengths of specimens from two concrete mixtures having static compressive strengths of approximately 2000 and 4000 psi, respectively, was investigated. The test specimens were cast as 1-1/2- by 3-in. cylinders and 6- by 6- by 20-in. beams, which were tested in triaxial compression and flexure, respectively. Triaxial specimens were tested under three lateral pressures (0, 250, and 500 psi) in order to...
Topics: DTIC Archive, Lundeen, R L, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *CONCRETE,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The effect of the rate of application of load on the compressive, tensile-splitting, and flexural strengths of specimens from three concrete mixtures having static compressive strengths of approximately 2000, 3000, and 4000 psi, respectively, was investigated. The test specimens were cast as 1-1/2- by 3-in. cylinders, 3- by 6-in. cylinders, and 6- by 6- by 20-in. beams, which were tested in compression, tensile splitting, and flexure, respectively. Dynamic loading of the specimens was...
Topics: DTIC Archive, Lundeen, R L, ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS, *CONCRETE,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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A system for the semantic categorization of conceptual objects (nominals) is provided. The system is intended to aid computer understanding of natural language. Specific implementations for noun-pairs and prepositional phrases are offered.
Topics: DTIC Archive, Russell, Sylvia Weber, STANFORD UNIV CA DEPT OF COMPUTER SCIENCE, *ARTIFICIAL...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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In order to better understand the fundamental aspects of a belt conveyor materials handling system, a model system was constructed. Evaluation and measure of performance of the various factors of the belt conveyor system were made by using a statistical experimental design approach.
Topics: DTIC Archive, Heins, R W, WISCONSIN UNIV-MADISON ENGINEERING EXPERIMENT STATION, *CONVEYORS, *EARTH...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Contents: Materials perfection and sharp band edges in amrophous Ge and Si; Studies of Te and As2Se3; Studies of the GeTe system; Dependence of structure of Amrophous germanium films on the angle of evaporation; Studies of amorphous Si; Structural studies in the Ge-S, Ge-Se and Ge-Te systems; Threefold coordinated model structure of amorphous GeS, GeSe and GeTe; The structure of chalcogenide glasses; Cu impurities in As2Se3; X-ray absorption edge spectroscopy studies; Photoconductivity in...
Topics: DTIC Archive, Spicer, W E, STANFORD UNIV CA CENTER FOR MATERIALS RESEARCH, *SEMICONDUCTORS, ARSENIC...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The document reports results of applied research in four task areas: Computation and Communication Trade-Off Studies (CACTOS); vocal English data management; on-line graphic computation; and systems research and networking. Work in these areas was directed toward the development of prototype facilities for a computer-assisted planning system. These facilities include a computer- network modeling system (the CACTOS model); systems for man-machine communication and data management via speech,...
Topics: DTIC Archive, Bernstein, Morton I, SYSTEM DEVELOPMENT CORP SANTA MONICA CA, *DATA PROCESSING,...
Development of two, experimental, Buoyant, Anti-Fragment, Bulletproof Vests which provide low-velocity protection against mortar shell bursts and secondary fragments (spall), provide protection against 30- caliber, small-arms fire and provide emergency, inherent buoyancy is reported. Each model consists of a carrier which has front and back panels that contain a 30- caliber-ball, body-armor plate, a combination of felt and/or woven ballistic nylon materials and layers of buoyant, unicellular...
Topics: DTIC Archive, Silvia, John, NAVY CLOTHING AND TEXTILE RESEARCH FACILITY NATICK MA, *BODY ARMOR,...
Defense Technical Information Archive
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A preliminary survey of literature pertaining to the acoustic detection of objects buried at subcritical angles in sediments is presented. Although no general solution to this problem has been found, it is shown that theoretical solutions for similar problems provide a basis for the development of theory for subcritical target detection.
Topics: DTIC Archive, Horton, Sr, Claude W, TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS, *ACOUSTIC...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Specimens of synthetic quartz were examined by transmission electron microscopy. Dauphine twins in (0001) sections, produced by cooling through the inversion temperature, were decorated at the boundaries by black spots caused by radiation damage in the microscope. These boundaries were straight lines following crystallographic directions. A misorientation between twins and matrix accounts for intensity differences between the two regions. The results are compared with those obtained with (1120)...
Topics: DTIC Archive, Comer, J J, AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA, *QUARTZ,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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For the purpose of localizing a distant noisy target, or inversely, calibrating the receiving array, the time delays defined by the propagation across the array of the target-generated signal wavefronts are to be estimated in the presence of array self-noise. The Cramer-Rao matrix bound is used to show that either properly filtered beamformers or properly filtered systems of multiplier correlators can be used to provide efficient estimates. The effect of suboptimally filtering the array outputs...
Topics: DTIC Archive, Hahn, William R, NAVAL ORDNANCE LAB WHITE OAK MD, *SONAR SIGNALS, OPTIMIZATION,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The report describes development of electron beam irradiation capabilities on the Defense Nuclear Agency (DNA) SNARK facility for use in materials and structures testing. Both large (about 100 square/cm) and small (about 10 square/cm) irradiation areas are discussed. Electron beam generation and control for this work was accomplished by use of external pulsed magnetic guide fields. Details of the beam transport work are given along with descriptions of several pilot material and structural...
Topics: DTIC Archive, Shope, Steven, PHYSICS INTERNATIONAL CO SAN LEANDRO CA, *GUIDED MISSILE WARHEADS,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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A mathematical model was developed to predict the scattering of a plane acoustic wave from an elastic spherical shell with different fluid media inside and out. The model was developed from the more convenient standpoint of elastic theory rather than from the acoustic point of view. Resulting equations were solved in terms of known functions. Matrix methods were used throughout. A numerical method is presented that takes advantage of some peculiarities of the resulting matrix and is appropriate...
Topics: DTIC Archive, Fender, William F, NAVAL UNDERSEA CENTER SAN DIEGO CA, *UNDERWATER SOUND, *ELASTIC...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The primary objectives of the paper are fourfold: To present an improved formulation of the out-of-kilter algorithm; To give the results of an extensive computational comparison of a code based on this formulation with three widely-used out-of-kilter production codes; To study the possible sensitivity of these programs to the type of problem being solved; To investigate the effect of advance dual start procedures on overall solution time.
Topics: DTIC Archive, Barr, R S, TEXAS UNIV AT AUSTIN CENTER FOR CYBERNETIC STUDIES, *LINEAR PROGRAMMING,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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An efficient solution method is given for a class of practical optimization problems requiring the determination of a consistent partial ordering for sets of objects, events, preferences, etc. These problems are characterized by the existence of 'noisy' (or contradictory) links of varying strengths. The origin of this class of problems is an anthropological study in which it is desired to specify a global chronological ordering of ancient cemetery data. A mathematical formulation is given which...
Topics: DTIC Archive, Glover, Fred, TEXAS UNIV AT AUSTIN CENTER FOR CYBERNETIC STUDIES, *ANTHROPOLOGY,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The report describes efforts by LMI to determine feasible methods of attaining the following dual interrelated objectives: to improved long-range predictions of the safe remaining structural life of groups of Naval aircraft (e.g., all Navy F-4Bs) to be used statistically to facilitate and support decisions regarding major structural modification programs, programmed aircraft model service life and service life extensions, and planning of the future military role to be filled by given aircraft...
Topics: DTIC Archive, LOGISTICS MANAGEMENT INST BETHESDA MD, *NAVAL AIRCRAFT, MAINTENANCE, MANAGEMENT...
An optimal method of detecting a pulse signal in the presence of background interference of the king presented by cloudy sky radiation characterized by a nongaussian distribution law is described.
Topics: DTIC Archive, Reznik, M Kh, NAVAL INTELLIGENCE SUPPORT CENTER WASHINGTON DC TRANSLATION DIV,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The bibliography is a collection of unclassified references to unclassified reports on pyrotechnics. These references pertain to composition, safety, design, configuration, launching, binders, release mechanisms, performance and capability of pyrotechnics. Flares, munitions, grenades, cartridges, bombs, and projectiles containing chemicals that produce brilliant light for illumination or colored lights or smoke for transmitting information for military purposes are discussed. Corporate...
Topics: DTIC Archive, DEFENSE DOCUMENTATION CENTER ALEXANDRIA VA, *BIBLIOGRAPHIES, *PYROTECHNICS, SMOKE...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Ultrasound has potential as a probe of biological structure. However, difficulties in reproducibility with sonification have occurred in our laboratory. Further, long unprotected exposure to high-frequency sound may be hazardous. An apparatus which avoids these difficulties is described.
Topics: DTIC Archive, MacKenzie, Maxime, NAVAL MEDICAL RESEARCH INST BETHESDA MD, *BIOLOGY,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The document describes methods and techniques for determining if a candidate tent or shelter meets the criteria stated in appropriate requirements documentation and is suitable for US Army use. Subtests address preoperational inspection of physical characteristics, safety, test personnel training, functional suitability, ease of handling, maintenance, transportability, portability, human factors engineering, and value analysis.
Topics: DTIC Archive, Rush, Ray, ARMY INFANTRY BOARD FORT BENNING GA, *SHELTERS, STABILITY, MILITARY...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Prescribes a method for evaluation of field protective mask operational and functional characteristics. Identifies supporting tests, facilities, and equipment required. Provides procedures for personnel training, functional suitability, adverse conditions, airdrop operations, troop acceptability, human factors, and value analysis. Applicable to masks with and without resuscitation device and drinking device.
Topics: DTIC Archive, Lavandar, Paul, ARMY INFANTRY BOARD FORT BENNING GA, *PROTECTIVE MASKS, ARMY...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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Computer programs have been developed for the calculation of helicopter rotor tip vortex geometry in hover and forward flight and for the calculation of helicopter rotor harmonic airloads in forward flight. Calculated forward flight tip vortex geometries compare well in general with experimental smoke studies although there are differences in detail. The hovering tip vortex geometry agrees qualitatively with experiment but does not move downward fast enough. Airloads were computed using both...
Topics: DTIC Archive, Scully, M P, MASSACHUSETTS INST OF TECH CAMBRIDGE AEROPHYSICS LAB, *FLOWMETERS,...
Defense Technical Information Archive
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The appendix contains a detailed discussion of the factors that influence procurement and retention in the US Army Reserve Components. Historical and current experience of the US Armed Services and selected foreign countries is reviewed and analyzed. It furnishes an overview of the recently- completed studies of Army Reserve Components through FY78 is calculated.
Topics: DTIC Archive, Clement, W L, RESEARCH ANALYSIS CORP MCLEAN VA, *MILITARY RESERVES, PERSONNEL,...
An analytical study was conducted to define the avionics system and the display and controls concept required for the HH-53C helicopter so that it could accomplish the USAF's all-weather SAR mission. The study tasks included development of an avionics concept based on a representative mission scenario, avionics and sensor package selection, a man/machine function allocation and crew workload analysis. A recommended avionics configuration was defined. The HH-53C can be upgraded by an avionics...
Topics: DTIC Archive, Lindquist, O Herbert, HONEYWELL INC MINNEAPOLIS MN SYSTEMS AND RESEARCH DIV, *DISPLAY...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The purpose of the work was to prepare compounds belonging to four chemical classes for evaluation as antimalarial drugs. 34 compounds were previously submitted for appropriate pharmacological evaluation. Of these, 16 were target compounds and 18 were intermediates. Alpha-(Di-n-butylaminomethyl)-2-phenyl-3',4',6,8-tetrachloro-1,2,3,4-tetrahydro-4-quinolinemethanol and its N-acetyl and N-ethyl derivatives were prepared to test the hypothesis that reduction of the pyridine ring in WR 30090 would...
Topics: DTIC Archive, Atkinson, Edward R, LITTLE (ARTHUR D) INC CAMBRIDGE MA, *ANTIMALARIALS, *QUINOLINES,...
The note presents the present status of the tank armor program, the proposed program for the immediate future, and an outline of the long range program. A review of the program proposed in August 1950 is made and proposals to meet the increase in scope and urgency demanded of this program are presented.
Topics: DTIC Archive, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *ARMOR, *TANKS(COMBAT...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The 1000 ft long building which constitutes the chamber is described in detail. The 10th scale runway lighting system and its control are described. The fog producing system is explained as well as the means for uniform fog density control. Information on basic instrumentation is included.
Topics: DTIC Archive, Horning, Don O, CALIFORNIA UNIV BERKELEY INST OF TRANSPORTATION AND TRAFFIC...
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Mar 26, 2019 Defense Technical Information Center
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The document describes a method for evaluation of mortar operational and functional performance characteristics. Identifies supporting tests, facilities, and equipment required. Provides procedures for personnel training, disassembly, assembly, mounting, dismounting, manipulation, removal of misfires, suitability, fire adjustment, range, accuracy, rate of fire, tactical employment, effectiveness, durability, reliability, transportability, maintainability, and value engineering.
Topics: DTIC Archive, Garland, Albert N, ARMY INFANTRY BOARD FORT BENNING GA, *MORTARS, MOBILITY, FIRING...
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Mar 26, 2019 Defense Technical Information Center
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The report is an operational description of a quartz tube, tungsten filament lamp bank developed for the characterization of nonmetallic thermal protection materials for high irradiance environments. The quartz lamp bank is a highly versatile apparatus for providing irradiances of up to 60 Cal/sq cm-sec for various specimen configurations of up to 80 square inches in surface area. The three operational modes consist of: (a) a pre-set irradiance level, (b) precise regulation in a closed-loop...
Topics: DTIC Archive, Olson, Nicholas J, DAYTON UNIV OH RESEARCH INST, *SIMULATORS, *THERMAL RADIATION,...
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Mar 26, 2019 Defense Technical Information Center
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A method is developed to interpret flat plate impingement pressure and temperature data taken in jet engine combustor burn-through flames in terms of free stream velocities, pressures, temperatures, etc. These flames, which are high-temperature, turbulent, underexpanded sonic jets, are caused, in practice, by the combustion gases impinging on (and burning a hole through) the wall of the combustor. The free stream property data are needed to compute local heat transfer coefficients, which must...
Topics: DTIC Archive, Pergament, H S, AEROCHEM RESEARCH LABS INC PRINCETON NJ, *COMBUSTION CHAMBERS,...
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Mar 26, 2019 Defense Technical Information Center
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The report relates to the technical activity associated with the operation, maintenance, and improvement of the Montana Large Aperture Seismic Array (LASA) during the period 1 June - 31 August 1972. The short-period (SP) and long-period (LP) seismograph sensitivity performance statistics are indicated. Performance data on the SP seismometer and LP seismic amplifier are presented. Initiation of an array surficial noise study is discussed. Improvement of the operating efficiency of the PDP-7...
Topics: DTIC Archive, Matkins, Robert E, PHILCO-FORD CORP BILLINGS MT COMMUNICATION SYSTEMS DIV,...
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Mar 26, 2019 Defense Technical Information Center
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Topics: DTIC Archive, Iverson, Warren P, NATIONAL BUREAU OF STANDARDS GAITHERSBURG MD, *CORROSION,...
Defense Technical Information Archive
Mar 26, 2019 Defense Technical Information Center
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The objectives of this research report are to outline a concept applying modern manufacturing techniques to the development of a mechanized yard for the construction of FDL ships, and to provide a preliminary assessment of the yard capital cost and its production rate.
Topics: DTIC Archive, Andrews, Benjamin V, STANFORD RESEARCH INST MENLO PARK CA, *NAVAL VESSELS,...
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Mar 26, 2019 Defense Technical Information Center
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Plastic goggles were produced which offer protection against several lasers. The goggles have a minimum optical density of at least 3 at 0.3-0.4, 0. 84, 0.78-1.76 and 2.755 to 14.0 microns and at least 4 at 1.06 microns. Cast plastic sheet was prepared which had similar protective capabilities. Over 300 organic compounds were evaluated and/or synthesized as possible near infrared absorbing compounds. Several of these structural systems offer promise for laser protection. The compounds were...
Topics: DTIC Archive, Sherr, Allan E, AMERICAN CYANAMID CO BOUND BROOK NJ ORGANIC CHEMICALS DIV, *COHERENT...
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Mar 26, 2019 Defense Technical Information Center
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The report describes progress in developing model equations based on an eddy viscosity written in terms of the scalar quantities for turbulence energy and integral length scale. The turbulence model equations have been shown to adequately describe mean and turbulence properties for incompressible and compressible flat plate boundary layers. Properties of an implicit finite difference method for solving the time-dependent model equations are discussed as applied to laminar (Navier-Stokes)...
Topics: DTIC Archive, Baum, E, TRW SYSTEMS GROUP REDONDO BEACH CA, *SLENDER BODIES, EQUATIONS OF MOTION,...
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Mar 26, 2019 Defense Technical Information Center
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An experimental program to study the process of entrainment and turbulent mixing in fireballs is described. The high pressure test facility and diagnostic equipment which were developed for this investigation and preliminary analyses which have been performed are discussed. Methods of acquiring density and velocity field data using holographic interferometry and particle tracking techniques, respectively, as well as the interpretation and reduction of these data are outlined. Preliminary...
Topics: DTIC Archive, Haigh, Wayne W, TRW SYSTEMS GROUP REDONDO BEACH CA, *NUCLEAR EXPLOSIONS, AIRBURST,...
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Mar 26, 2019 Defense Technical Information Center
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See also AD-711 544.(*forging, mechanics), dies, forge presses, stresses, deformation, stainless steel, titanium alloys, hydraulic presses, instrumentation*closed die forgingThe report represents the results of work completed under this manufacturing improvement program. The program covered the following specific areas; (a) flow stresses of metals, (b) instrumentation of forging presses, (c) evaluation and comparison of screw presses and mechanical presses for forging, (d) uniform compression...
Topics: DTIC Archive, Douglas, James R, BATTELLE COLUMBUS DIV OH, *FORGING, DEFORMATION, DIES, FORGE...
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Mar 26, 2019 Defense Technical Information Center
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Three general areas related to nonacoustic detection were investigated: Diffusion from the wake; Signal processing; Analysis of oceanographic experiments. (Author)
Topics: DTIC Archive, Grosch, Chester E, OCEAN AND ATMOSPHERIC SCIENCE INC DOBBS FERRY NY, *UNDERWATER...
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Mar 26, 2019 Defense Technical Information Center
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The effect of addition on internal energy to the ion or neutral reactant in an ion-neutral process has been investigated. Changes in the cross section for certain processes are reported and a change in the state of excitation of the final product can in some cases be postulated. The reactions between O(+) + N2, N(+) + N2, N(+) + O2, N2(+) + O2, and N2(+) + O were considered. Where the cross section was found to increase with addition of internal energy to either the ion or the neutral, an...
Topics: DTIC Archive, Neynaber, R H, GULF RADIATION TECHNOLOGY SAN DIEGO CA, *NITROGEN, *OXYGEN, *UPPER...
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Mar 26, 2019 Defense Technical Information Center
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The report describes a broad experimental program that was undertaken to assess the feasibility of reducing NO(x) from aircraft gas turbine engines by fuel modification. The Esso High Pressure Cannular Combustor was used to simulate the characteristic emissions of gas turbines at full power operation. Over 70 fuel modifications were tested using Jet A as the base fuel. Soluble compounds of cobalt, iron, magnesium, and copper reduce NO(x) by as much as 30% when added to the fuel at a treat rate...
Topics: DTIC Archive, Shaw, Henry, ESSO RESEARCH AND ENGINEERING CO LINDEN NJ GOVERNMENT RESEARCH LAB, *AIR...
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Mar 26, 2019 Defense Technical Information Center
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The purpose of this program was to develop a sensor capable of detecting metal particles of various sizes and/or metal in solution down to the level of 10 parts per million (ppm) weight concentration. The sensor was to be capable of detecting both magnetic and non-magnetic metals. With respect to possible application in airborne systems, the sensor was to have detection capability over the temperature range from ambient to 400F and was to be capable of withstanding vibratory environments....
Topics: DTIC Archive, Bertin, Michael C, NUCLEONIC DATA SYSTEMS INC IRVINE CA, *LUBRICANTS, *MONITORS,...
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A test program was conducted to evaluate the effect of dynamic absorbers and damping on the noise generated by a CH-47 rotor transmission. Comparison was made between predicted and measured results, and a method for comparing the efficiency of various methods of transmission noise reduction was developed. Gear damping was achieved by filling the gear shafts with Viton, and by a ring of Viton on the spiral bevel ring gear. Constrained layer damping was also used on the outside of the planetary...
Topics: DTIC Archive, Sternfeld, H, BOEING VERTOL CO PHILADELPHIA PA, *HELICOPTER ROTORS,...
An investigation was undertaken to develop an abrasive oil contaminant indicator for use on the M35A2 2 1/2 ton and the M151A2 1/4 ton trucks. This included quantitative determination of the characteristics of abrasive lubricant contaminant, the development of a concept to detect and indicate the presence of the abrasive particles, the design, fabrication and testing of a device to implement this concept in a practical manner. The sensor developed employs a thin metallic coating on a...
Topics: DTIC Archive, Monaghan, David A, FOSTER-MILLER INC WALTHAM MA, *LUBRICANTS, ABRASIVES,...
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Mar 26, 2019 Defense Technical Information Center
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An investigation has been initiated to determine the relationship between the fracture toughness and yield strength in the alpha-beta alloy, Ti-5. 25Al-5.5V-0.9Fe-0.5Cu.
Topics: DTIC Archive, Margolin, Harold, NEW YORK UNIV NY ENGINEERING RESEARCH DIV, *TITANIUM ALLOYS,...
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Mar 26, 2019 Defense Technical Information Center
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The report presents the current status of work in the weather models, with a view toward climatological application. Vector Spherical Harmonics are reviewed in the context of solving partial differential equations in spherical coordinates. The basic equations governing global weather models are presented. Vector Spherical Harmonics are applied to these equations in spherical coordinates and it is shown how separation of variables is achieved in the sense that angular dependence is eliminated.
Topics: DTIC Archive, Kjorklund, Sven, IBM FEDERAL SYSTEMS DIV GAITHERSBURG MD, *WEATHER FORECASTING,...
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Mar 26, 2019 Defense Technical Information Center
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The report is a study of the structure of engineering systems with respect to time related behavior. The development is unconventional in not being based on system properties such as linearity, time invariance, etc. The main question of interest concerns the possibility of decomposing a general system into a sum of systems with less complex time related behavior. An analysis of characteristic properties of such systems and their interconnection with other aspects of system behavior is also...
Topics: DTIC Archive, Santis, Romano Mario De, MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING,...
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Mar 26, 2019 Defense Technical Information Center
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The program represents a continuation of a comprehensive experimental investigation of laser beam scintillations due to atmospheric turbulence. The report summarizes the efforts that are underway on three aspects of the PROBLEM: (1) multiwavelength scintillations over a long horizontal path, (2) turbulence intermittency effects, and (3) transmitter-aperture effects including the cancellation of atmospherically-induced beam wander. The long-path horizontal measurements are expected to clarify...
Topics: DTIC Archive, Kerr, J R, OREGON GRADUATE CENTER BEAVERTON, *COHERENT RADIATION, *LIGHT...
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Mar 26, 2019 Defense Technical Information Center
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The suitability of the mechanism proposed to describe the kinetic data for the pyrolysis of OF2 was discussed. In view of its limitations, an alternate mechanism was proposed, which is consistent with all of the most recent kinetic data. The study of the rate of the H2-OF2 reaction was continued in a magnesium reactor in an attempt to further reduce the surface effects. The indications are that the heterogeneous contributions to the rate are less than those found in monel or aluminum. A...
Topics: DTIC Archive, Houser, Thomas, WESTERN MICHIGAN UNIV KALAMAZOO DEPT OF CHEMISTRY, *FLUORIDES,...